<template>
  <div style="display: flex">
<!--    左边部分-->
<!--    绑定变量---》绑定样式属性-->
<!--    v-bind:style-->
    <!-- 1.display: flex;使用弹性布局，让父元素中的子元素横置，
    且父元素会根据子元素浮动后的实际高度自动填充高度   -->
    <div :style="{width:(isCollapse ? '64px' : '208px')}">
      <!-- 左侧菜单栏 -->
      <el-menu
      background-color="#3c82f5"
      style="width: 100%;height: 100%;min-height: 100vh"
      text-color="#fff"
      active-text-color="#ff0"
      :collapse="isCollapse"
      :collapse-transition="false"
      unique-opened router
      @select="selectMenu">
        <el-row style="padding-top: 10px">
          <el-col :span="2"><img src="/imgs/admin/logo.png" style="width:60px;height:60px;"></el-col>
          <el-col :span="isCollapse ? 0:22">
            <router-link to="/"
                         style="color: white;text-decoration: none;
                         position: relative;top:8px;left:77px;font-weight: bold;
                         font-size: 25px">智慧车辆</router-link>
          </el-col>
        </el-row>
        <el-sub-menu index="1">
          <!--      #title表示是标题的意思  -->
          <template #title>
            <el-icon style="font-size:21px;"><User/></el-icon><span>用户管理</span>
          </template>
          <el-menu-item index="/user">用户列表</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="2">
          <template #title>
            <el-icon style="font-size:21px;"><Van/></el-icon>
            <span>车辆管理</span>
          </template>
          <el-menu-item index="/vehicle">基本信息</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="3">
          <template #title>
            <el-icon style="font-size:21px;"><Place/></el-icon>
            <span>调度管理</span>
          </template>
          <el-menu-item index="/application">申请列表</el-menu-item>
          <el-menu-item index="/audit">调度审核</el-menu-item>
          <el-menu-item index="/distribute">车辆分配</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="4">
          <template #title>
            <el-icon style="font-size:21px;"><Location/></el-icon>
            <span>电子围栏</span>
          </template>
          <el-menu-item index="/geofence">围栏管理</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="5">
          <template #title>
            <el-icon style="font-size:21px;"><MessageBox/></el-icon>
            <span>数据字典</span>
          </template>
          <el-menu-item index="/dict">字典管理</el-menu-item>
        </el-sub-menu>
      </el-menu>
    </div>
    <!--    右边部分-->
    <div :style="{width:( isCollapse ? 'calc(100% - 64px)': 'calc(100% - 208px)')}">
      <el-header>
<!--        1 row-->
        <!--5.1 折叠图标与退出登录-->
        <el-row :gutter="10">
          <el-col :span="18">
            <el-icon style="font-size:20px;position:relative;top:3px;" @click="changeCollapsed"><Expand/></el-icon>
          </el-col>
          <el-col :span="6" style="position: relative;">
            <el-dropdown trigger="click" style="position:absolute;right:20px;">
                     <span style="font-size:19px;font-weight: bold;">
                        {{user.username}}
                         <el-icon><arrow-down/></el-icon>
                     </span>
              <template #dropdown>
                <el-dropdown-menu>
                  <el-dropdown-item @click="logout">退出登录</el-dropdown-item>
                </el-dropdown-menu>
              </template>
            </el-dropdown>
          </el-col>
        </el-row>
<!--        2 row-->
        <el-breadcrumb separator="/" style="position: relative;top:20px;">
          <el-breadcrumb-item>首页</el-breadcrumb-item>
          <el-breadcrumb-item v-for="item in breadCrumb">{{item}}</el-breadcrumb-item>
        </el-breadcrumb>
      </el-header>
      <el-main>
        <router-view/>
      </el-main>
    </div>
  </div>

</template>

<script setup>
import {ref} from "vue";
//定义变量控制菜单是否折叠
const isCollapse = ref(false)

const changeCollapsed = () => {
  isCollapse.value = !isCollapse.value
}

const logout = () => {
  if (confirm('确定是否退出登录')){
    localStorage.removeItem('user');
    //退出时,面包屑也需要清空!
    localStorage.removeItem('breadCrumb')
    window.location.href='/login';
    user.value='';
  }

}

const breadCrumb = ref(JSON.parse('["用户管理", "用户列表"]'));
let map = {
  '/user':['用户管理','用户列表'],
  '/vehicle': ['车辆管理','基本信息'],
  '/application': ['调度管理','申请列表'],
  '/audit': ['调度管理','调度审核'],
  '/distribute':['调度管理','车辆分配'],
  '/geofence':['电子围栏','围栏管理'],
  '/dict':['数据字典','字典管理']
}
const selectMenu = (index)=>{

  breadCrumb.value = map[index]
}
const user = ref(getUser());
</script>

<!--左、右{上下}-->